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MCBs - Miniature Circuit Breakers

MCBs (Miniature Circuit Breakers)

What is an MCB?

MCB stands for Miniature Circuit Breaker. 

It's a small device designed to interrupt electrical flow when it detects abnormal conditions such as overload or short circuits. 

Essentially, it acts as a safety switch – protecting your electrical circuits and preventing potential hazards like fire or equipment damage.

How Do MCBs Work?

MCBs work by monitoring the flow of electricity through a circuit. 

When the current exceeds the MCB's rated capacity, or there's a short circuit, it trips - cutting off the power supply and preventing further damage.

Can I Change an MCB Myself?

Yes, MCBs are designed for easy installation and replacement. 

However, you’ll need to follow proper safety procedures and will need the knowledge and skills to handle electrical work safely. 

It's always best to consult a qualified electrician if you're unsure.

What Size MCB for Sockets?

The MCB's size depends on the electrical circuit's rating and the appliances connected to it. 

A 32A or 40A MCB is typically suitable for socket outlets commonly used in homes. 

However, you should consult electrical regulations and guidelines to pick the right size for your specific application.

Can MCBs Be Used for DC?

Yes, MCBs can be used for both AC (alternating current) and DC (direct current) circuits. 

However, you should choose MCBs specifically rated for DC applications to ensure you get the right protection and performance.

What Are the Types of MCB?

Various types of MCBs are available, including Type B, Type C, and Type D, each designed to trip at different levels of overload or short circuit currents.

What is the Tripping Mechanism of an MCB?

The tripping mechanism of an MCB is typically based on either thermal or magnetic principles. 

Thermal MCBs respond to the heat generated by overcurrent, while magnetic MCBs detect sudden surges in current. 

Some MCBs feature both mechanisms for better protection.

Where Are MCBs Installed?

MCBs are installed in electrical distribution boards, consumer units, or fuse boxes to protect individual circuits or groups of circuits within a building. 

They are commonly found in residential, commercial, and industrial settings.

Can I Reset an MCB?

Yes, most MCBs feature a reset function that allows you to restore power to the circuit after it has tripped. 

Simply switch the MCB back to the "on" position after fixing the cause of the trip.

Invest in quality MCBs today to ensure the safety and reliability of your electrical installations. 

Browse our selection of MCBs to find the perfect solution for your needs!

  • Original price £28.25 - Original price £28.25
    Original price
    £28.25 inc VAT
    £28.25 - £28.25
    Current price £28.25 inc VAT
    £23.54 ex VAT

    ABB 2CDS283001R0324 MCB 3 Pole C Curve 32A 15KA

    System pro M compact S200P miniature circuit breakers are current limiting. They have two different tripping mechanisms, the delayed thermal trippi...

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    Original price £28.25 - Original price £28.25
    Original price
    £28.25 inc VAT
    £28.25 - £28.25
    Current price £28.25 inc VAT
    £23.54 ex VAT
  • Original price £4.74 - Original price £4.74
    Original price
    £4.74 inc VAT
    £4.74 - £4.74
    Current price £4.74 inc VAT
    £3.95 ex VAT

    Eaton AD32B Eaton 32A SP MCB Type B 6Ka

    Eaton Memera AD32B Miniature Circuit Breaker is a consumer unit device suitable for circuit protection. It complies to BSEN 60898 • To BSEN 60898 ...

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    Original price £4.74 - Original price £4.74
    Original price
    £4.74 inc VAT
    £4.74 - £4.74
    Current price £4.74 inc VAT
    £3.95 ex VAT
  • Original price £10.56 - Original price £10.56
    Original price
    £10.56 inc VAT
    £10.56 - £10.56
    Current price £10.56 inc VAT
    £8.80 ex VAT

    Siemens 5SY4132-7 MCB SP Type C 32A 10Ka

    Miniature circuit breaker 230/400 V 10kA, 1-pole, C, 32 A, D=70 mm The miniature circuit breaker is the fuse for short-circuit protection. The mini...

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    Original price £10.56 - Original price £10.56
    Original price
    £10.56 inc VAT
    £10.56 - £10.56
    Current price £10.56 inc VAT
    £8.80 ex VAT
  • Original price £17.93 - Original price £17.93
    Original price
    £17.93 inc VAT
    £17.93 - £17.93
    Current price £17.93 inc VAT
    £14.94 ex VAT

    Schneider A9N17522 IDPN Circuit Breaker 1p+N, 32A B Curve

    Original price £17.93 - Original price £17.93
    Original price
    £17.93 inc VAT
    £17.93 - £17.93
    Current price £17.93 inc VAT
    £14.94 ex VAT
  • Original price £2.50 - Original price £2.50
    Original price
    £2.50 inc VAT
    £2.50 - £2.50
    Current price £2.50 inc VAT
    £2.08 ex VAT

    Eaton EAD32B Miniature Circuit Breaker MCB Single Pole Type B 32A Grey

    These 6kA MCBs are fitted with box clamp terminals suitable for use with cables up to 25 mm². The type-B breaker is suitable for general • DIN rail...

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    Original price £2.50 - Original price £2.50
    Original price
    £2.50 inc VAT
    £2.50 - £2.50
    Current price £2.50 inc VAT
    £2.08 ex VAT
  • Original price £13.12 - Original price £13.12
    Original price
    £13.12 inc VAT
    £13.12 - £13.12
    Current price £13.12 inc VAT
    £10.93 ex VAT

    Lewden E10-2D32 MCB DP Type D 32A 10kA

    Miniature Circuit Breakers are for installation into Lewden's range of commercial and industrial TP&N Industrial Board range providing protecti...

    View full details
    Original price £13.12 - Original price £13.12
    Original price
    £13.12 inc VAT
    £13.12 - £13.12
    Current price £13.12 inc VAT
    £10.93 ex VAT
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MCBs (Miniature Circuit Breakers)

What is an MCB?

MCB stands for Miniature Circuit Breaker. 

It's a small device designed to interrupt electrical flow when it detects abnormal conditions such as overload or short circuits. 

Essentially, it acts as a safety switch – protecting your electrical circuits and preventing potential hazards like fire or equipment damage.

How Do MCBs Work?

MCBs work by monitoring the flow of electricity through a circuit. 

When the current exceeds the MCB's rated capacity, or there's a short circuit, it trips - cutting off the power supply and preventing further damage.

Can I Change an MCB Myself?

Yes, MCBs are designed for easy installation and replacement. 

However, you’ll need to follow proper safety procedures and will need the knowledge and skills to handle electrical work safely. 

It's always best to consult a qualified electrician if you're unsure.

What Size MCB for Sockets?

The MCB's size depends on the electrical circuit's rating and the appliances connected to it. 

A 32A or 40A MCB is typically suitable for socket outlets commonly used in homes. 

However, you should consult electrical regulations and guidelines to pick the right size for your specific application.

Can MCBs Be Used for DC?

Yes, MCBs can be used for both AC (alternating current) and DC (direct current) circuits. 

However, you should choose MCBs specifically rated for DC applications to ensure you get the right protection and performance.

What Are the Types of MCB?

Various types of MCBs are available, including Type B, Type C, and Type D, each designed to trip at different levels of overload or short circuit currents.

What is the Tripping Mechanism of an MCB?

The tripping mechanism of an MCB is typically based on either thermal or magnetic principles. 

Thermal MCBs respond to the heat generated by overcurrent, while magnetic MCBs detect sudden surges in current. 

Some MCBs feature both mechanisms for better protection.

Where Are MCBs Installed?

MCBs are installed in electrical distribution boards, consumer units, or fuse boxes to protect individual circuits or groups of circuits within a building. 

They are commonly found in residential, commercial, and industrial settings.

Can I Reset an MCB?

Yes, most MCBs feature a reset function that allows you to restore power to the circuit after it has tripped. 

Simply switch the MCB back to the "on" position after fixing the cause of the trip.

Invest in quality MCBs today to ensure the safety and reliability of your electrical installations. 

Browse our selection of MCBs to find the perfect solution for your needs!

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